EP 0002161 A3 19800528 - PIEZO-ELECTRIC TRANSDUCING DEVICE AND PROCESS FOR ITS MANUFACTURE

Title (en)

PIEZO-ELECTRIC TRANSDUCING DEVICE AND PROCESS FOR ITS MANUFACTURE

Publication

EP 0002161 A3 19800528 (FR)

Application

EP 78400192 A 19781117

Priority

FR 7734589 A 19771117

Abstract (en)

[origin: US4284921A] The invention relates to devices using transducer elements comprising a film of piezoelectric polymer arranged between electrodes. The transducer element in accordance with the present invention is in the form of a thermoformed protuberance. These devices are used for detecting and generating elastic compression waves, for infrared radiation, and for storing electrical energy.

IPC 1-7

H04R 17/00; H01L 41/00; F42C 11/02; H03F 13/00; H03H 9/00; G01J 5/38; F04B 17/00

IPC 8 full level

B06B 1/06 (2006.01); H04R 17/00 (2006.01); H04R 23/02 (2006.01); H10N 30/00 (2023.01); H10N 30/098 (2023.01); H10N 30/30 (2023.01); H10N 30/40 (2023.01)

CPC (source: EP US)

B06B 1/0688 (2013.01 - EP US); H04R 17/005 (2013.01 - EP US); H04R 23/02 (2013.01 - EP US); H10N 30/084 (2023.02 - EP US); H10N 30/098 (2023.02 - EP US); H10N 30/2048 (2023.02 - EP US); H10N 30/308 (2023.02 - EP US); H10N 30/40 (2023.02 - EP US); Y10S 310/80 (2013.01 - EP US); Y10T 29/42 (2015.01 - EP US); Y10T 29/435 (2015.01 - EP US)

Citation (search report)

[X] US 3816774 A 19740611 - MIYAJIMA S, et al
FR 2303436 A1 19761001 - PHILIPS NV [NL]
US 4056742 A 19771101 - TIBBETTS GEORGE C
DE 875212 C 19530430 - SIEMENS AG
GB 1312879 A 19730411 - WESTERN ELECTRIC CO
GB 1464555 A 19770216 - MARCONI CO LTD
GB 1377891 A 19741218 - MARCONI CO LTD
[A] DE 2344199 A1 19750306 - MESSERSCHMITT BOELKOW BLOHM
[A] US 3031968 A 19620501 - DOWDELL THOMAS DE W, et al
[A] FR 2257356 A1 19750808 - IBM [US]
[A] DE 1614600 A1 19701029 - SIEMENS AG
[A] DE 1257997 B 19680104 - WERK FUER BAUELEMENTE DER NACH, et al
[A] FR 1455140 A 19661014 - SONUS CORP
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 57, 3 Juin 1977, page 3744, E76; & JP-A-51 151 121
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 86, 11 Août 1977, page 1901, E77; & JP-A-52 021 823
PATENT ABSTRACTS OF JAPAN, vol. 1, no. 88, 16 août 1977, page 2056, E77; & JP-A-52 023 283
[A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 20, no. 2, juillet 1977, New York, (US) W.T. CHEN et al: "Ink jet head", pages 504,505

Designated contracting state (EPC)

DE GB NL

DOCDB simple family (publication)

EP 0002161 A2 19790530; EP 0002161 A3 19800528; EP 0002161 B1 19831102; DE 2862345 D1 19831208; FR 2409654 A1 19790615; FR 2409654 B1 19851004; JP S5520086 A 19800213; US 4284921 A 19810818; US 4384394 A 19830524

DOCDB simple family (application)

EP 78400192 A 19781117; DE 2862345 T 19781117; FR 7734589 A 19771117; JP 14214578 A 19781117; US 26321881 A 19810513; US 96101378 A 19781115